<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区 -->
    <el-card>
      <!-- 头部搜索区 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getGoodsList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getGoodsList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddpage">添加商品</el-button>
        </el-col>
      </el-row>

      <!-- 内容表格区 -->
      <el-table :data="goodslist" border stripe>
        <!-- 索引列 -->
        <el-table-column type="index" label="#"> </el-table-column>
        <!-- 商品名称列 -->
        <el-table-column label="商品名称" prop="goods_name"> </el-table-column>
        <!-- 商品价格列 -->
        <el-table-column label="商品价格(元)" prop="goods_price" width="95px">
        </el-table-column>
        <!-- 商品重量列 -->
        <el-table-column label="商品重量" prop="goods_weight" width="70px">
        </el-table-column>
        <!-- 创建时间列 -->
        <el-table-column label="创建时间" prop="add_time" width="160px">
          <!-- 自定义渲染 -->
          <template slot-scope="scope">
            <!-- 利用时间过滤器将时间戳以年-月-日 时：分：秒 的格式渲染到页面上-->
            {{ scope.row.add_time | dateFormat }}
          </template>
        </el-table-column>
        <!-- 操作列 -->
        <el-table-column label="操作" width="130px">
          <!-- 作用域插槽 -->
          <template slot-scope="scope">
            <el-button
              size="mini"
              type="primary"
              icon="el-icon-edit"
            ></el-button>
            <el-button
              size="mini"
              type="danger"
              icon="el-icon-delete"
              @click="removeById(scope.row.goods_id)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 15, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        background
      >
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  data() {
    return {
      //  查询参数对象
      queryInfo: {
        query: "",
        pagenum: 1,
        pagesize: 10,
      },

      //商品列表
      goodslist: [],

      // 总数据条数（用来实现分页）
      total: 0,
    };
  },

  created() {
    this.getGoodsList();
  },

  methods: {
    // 根据分页获取商品列表数据
    async getGoodsList() {
      // 请求数据
      const { data: res } = await this.$http.get("goods", {
        params: this.queryInfo,
      });
      if (res.meta.status !== 200) {
        return this.$message.error("获取商品列表失败");
      } else {
        this.$message.success("获取商品列表成功");
        // console.log(res.data);
        this.goodslist = res.data.goods;
        console.log(this.goodslist);
        this.total = res.data.total;
        // console.log( this.total);
      }
    },

    // 获取最新的每页数据的条数
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize;
      this.getGoodsList();
    },

    //获取最新的页码值
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage;
      this.getGoodsList();
    },

    // 点击按钮删除商品
    async removeById(id) {
      const confirmResult = await this.$confirm("此操作将永久删除该商品, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      }).catch(err=>err)

      if(confirmResult !== 'confirm'){
        return this.$message.info('已取消删除')
      }else{
        // 确定删除
       const {data:res} = await this.$http.delete(`goods/${id}`)
        if(res.meta.status !== 200){
          return this.$message.error('删除失败')
        }else{
          this.$message.success('删除成功')
          // 重新加载
          this.getGoodsList()
        }
      }
    },

    // 添加商品
    goAddpage(){
      this.$router.push('/goods/add')
    }
  },
};
</script>

<style lang="less" scoped>
</style>